Address
Nanzhai village, Liushi Town, yueqingCity, zhejiang Province, china
Tel
+86-13375775325
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Product Introduction:
This is a 20kV, 3kN Red Pin Polymer Insulator, a critical component designed for electrical insulation and mechanical support in overhead power distribution networks. Its most prominent feature is the five-shed, alternating shed design, engineered to achieve a very substantial creepage distance of 650mm. This design prioritizes exceptional performance in polluted and humid environments, ensuring reliable insulation by preventing surface electrical discharges, known as flashovers. The composite insulator is mounted on a support pin to hold and isolate the live conductor from the grounded utility pole.
Drawings:
Specifications:
Product Type: | FPW-20-3 |
Height(mm): | 345± 10 |
Min Dry Arcing Distance(mm): | 300 |
Min Creepage Distance(mm): | 650 |
Diameter of the rod(mm): | 24 |
Number of sheds: | 5 |
Sheds of diameter(mm): | 145/110 |
Screw diameter/ Screw length(mm): | M20/140 |
Rated Bending Load(kN): | 3 |
Rated Voltage(kV): | 20 |
Lightning Impulse Withstand Voltage(kV): | 145 |
Power Frequency Withstand Voltage(kV): | 65 |
Key Features & Design Advantages:
Superior Pollution Resistance (650mm Creepage Distance): The 650mm creepage distance is a standout feature for a 20kV insulator. This long, tortuous path along the insulator's surface is essential for preventing flashovers in areas with industrial pollution, coastal salt fog, or desert dust, where contamination can build up and reduce insulation performance.
Optimized Shed Profile (Big-Small Design): The five-shed configuration with alternating diameters is a key engineering feature. This design maximizes the surface leakage path without unnecessarily increasing the insulator's height. It also promotes better water shedding during rain, preventing the formation of a continuous water film that could cause a short circuit.
Robust Mechanical Strength (3kN): With a mechanical cantilever strength rating of 3 kilonewtons, this insulator can reliably support the weight of the conductors and withstand additional mechanical stresses from wind and ice.
Durable HDPE Material: As indicated on the image, the insulator body is manufactured from High-Density Polyethylene (HDPE). HDPE offers excellent dielectric properties, high impact strength, and outstanding resistance to moisture absorption and chemical corrosion. It is also lightweight, which simplifies handling and installation. The red color is typically achieved with UV-stable pigments for long-term color retention.
Integrated Metal Fittings: The insulator features durable, corrosion-resistant metal end fittings. The top has a pin head with a groove for securely tying the conductor, and the base is a threaded shank for screwing directly into a pole-mounted cross-arm.
Production Process:
The manufacturing of this HDPE high voltage pin insulator typically involves an injection molding process, which is ideal for high-volume production of complex shapes with consistent quality.
Material Preparation: HDPE resin pellets, mixed with stabilizers and red color masterbatch, are fed into the hopper of an injection molding machine.
Injection Molding: The pellets are heated until molten and then injected under high pressure into a precision steel mold. The mold cavity is shaped to form the insulator's body, including the intricate five-shed "big-small" profile and the spaces for the metal fittings in a single, seamless operation.
Metal Insert Molding: The metal end fittings (pin head and threaded stud) are precisely placed in the mold before injection. The molten HDPE is then injected around them, creating a strong, permanent mechanical bond as the plastic cools and shrinks onto the metal inserts.
Cooling and Ejection: The molded insulator is allowed to cool and solidify within the mold. Once set, the mold opens, and the finished product is ejected.
Quality Control: Each insulator undergoes rigorous checks, including visual inspection for defects and sample electrical testing (e.g., power frequency withstand test) to verify the 20kV rating.
Application Scenarios:
This 20kV distribution pin insulator is ideally suited for a range of medium-voltage applications, particularly in challenging environments:
Polluted and Coastal Areas: Its long 650mm creepage distance makes it perfect for industrial zones and coastal regions where salt fog pollution is a major concern.
11kV / 20kV Overhead Distribution Lines: Used as a pin insulator on utility poles to support and insulate primary distribution lines.
Pole-Mounted Equipment: Provides insulation for connections to distribution transformers, switchgear, and cable terminations.
Rural Electrification and Railway Systems: Its durability and pollution performance make it a reliable choice for infrastructure projects in diverse climates.
Company Strength:
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Product Introduction:
This is a 20kV, 3kN Red Pin Polymer Insulator, a critical component designed for electrical insulation and mechanical support in overhead power distribution networks. Its most prominent feature is the five-shed, alternating shed design, engineered to achieve a very substantial creepage distance of 650mm. This design prioritizes exceptional performance in polluted and humid environments, ensuring reliable insulation by preventing surface electrical discharges, known as flashovers. The composite insulator is mounted on a support pin to hold and isolate the live conductor from the grounded utility pole.
Drawings:
Specifications:
Product Type: | FPW-20-3 |
Height(mm): | 345± 10 |
Min Dry Arcing Distance(mm): | 300 |
Min Creepage Distance(mm): | 650 |
Diameter of the rod(mm): | 24 |
Number of sheds: | 5 |
Sheds of diameter(mm): | 145/110 |
Screw diameter/ Screw length(mm): | M20/140 |
Rated Bending Load(kN): | 3 |
Rated Voltage(kV): | 20 |
Lightning Impulse Withstand Voltage(kV): | 145 |
Power Frequency Withstand Voltage(kV): | 65 |
Key Features & Design Advantages:
Superior Pollution Resistance (650mm Creepage Distance): The 650mm creepage distance is a standout feature for a 20kV insulator. This long, tortuous path along the insulator's surface is essential for preventing flashovers in areas with industrial pollution, coastal salt fog, or desert dust, where contamination can build up and reduce insulation performance.
Optimized Shed Profile (Big-Small Design): The five-shed configuration with alternating diameters is a key engineering feature. This design maximizes the surface leakage path without unnecessarily increasing the insulator's height. It also promotes better water shedding during rain, preventing the formation of a continuous water film that could cause a short circuit.
Robust Mechanical Strength (3kN): With a mechanical cantilever strength rating of 3 kilonewtons, this insulator can reliably support the weight of the conductors and withstand additional mechanical stresses from wind and ice.
Durable HDPE Material: As indicated on the image, the insulator body is manufactured from High-Density Polyethylene (HDPE). HDPE offers excellent dielectric properties, high impact strength, and outstanding resistance to moisture absorption and chemical corrosion. It is also lightweight, which simplifies handling and installation. The red color is typically achieved with UV-stable pigments for long-term color retention.
Integrated Metal Fittings: The insulator features durable, corrosion-resistant metal end fittings. The top has a pin head with a groove for securely tying the conductor, and the base is a threaded shank for screwing directly into a pole-mounted cross-arm.
Production Process:
The manufacturing of this HDPE high voltage pin insulator typically involves an injection molding process, which is ideal for high-volume production of complex shapes with consistent quality.
Material Preparation: HDPE resin pellets, mixed with stabilizers and red color masterbatch, are fed into the hopper of an injection molding machine.
Injection Molding: The pellets are heated until molten and then injected under high pressure into a precision steel mold. The mold cavity is shaped to form the insulator's body, including the intricate five-shed "big-small" profile and the spaces for the metal fittings in a single, seamless operation.
Metal Insert Molding: The metal end fittings (pin head and threaded stud) are precisely placed in the mold before injection. The molten HDPE is then injected around them, creating a strong, permanent mechanical bond as the plastic cools and shrinks onto the metal inserts.
Cooling and Ejection: The molded insulator is allowed to cool and solidify within the mold. Once set, the mold opens, and the finished product is ejected.
Quality Control: Each insulator undergoes rigorous checks, including visual inspection for defects and sample electrical testing (e.g., power frequency withstand test) to verify the 20kV rating.
Application Scenarios:
This 20kV distribution pin insulator is ideally suited for a range of medium-voltage applications, particularly in challenging environments:
Polluted and Coastal Areas: Its long 650mm creepage distance makes it perfect for industrial zones and coastal regions where salt fog pollution is a major concern.
11kV / 20kV Overhead Distribution Lines: Used as a pin insulator on utility poles to support and insulate primary distribution lines.
Pole-Mounted Equipment: Provides insulation for connections to distribution transformers, switchgear, and cable terminations.
Rural Electrification and Railway Systems: Its durability and pollution performance make it a reliable choice for infrastructure projects in diverse climates.
Company Strength:
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